Is there a simple function available to block a number of picture, which are ready developed to protect for further development setting?
Background : I have unfortunety selected a number of new pictures and started those developments without having deselected those already developed and finally made the mistake to select synchronize developement settings of the latest developed picture to all other selected. This is the reason I would like to use a functiuon : block / lock picture to new developments
System I am using : MAC PRO end 2013 with macOS 10.13.6 and LR6.13
Would be great to get a hint from someone and hope I was clear with my problem